<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>Vue 测试实例 - 菜鸟教程(runoob.com)</title>
    <script src="https://cdn.staticfile.org/vue/2.4.2/vue.min.js"></script>
</head>
<body>
<div id="app">
    <p>{{ site }}</p>
</div>

<script>
    var vm = new Vue({
        el: '#app',
        data: {
            name: 'Google',
            url: 'http://www.google.com'
        },
        computed: {
            site: {
                // getter
                get: function () {
                    return this.name + ' ' + this.url
                },
                // setter
                set: function (newValue) {
                    var names = newValue.split(' ')
                    this.name = names[0]
                    this.url = names[names.length - 1]
                }
            }
        }
    })
    // 调用 setter， vm.name 和 vm.url 也会被对应更新
    vm.site = '菜鸟教程 http://www.runoob.com';
    document.write('name: ' + vm.name);
    document.write('<br>');
    document.write('url: ' + vm.url);
</script>
</body>
</html>